Project Cornerstone's mission is to educate the public about the importance of local construction aggregates (i.e., sand, gravel and crushed stone) through hands-on learning in Science, Technology, Engineering and Mathematics (STEM). Construction aggregates are used to build roads, houses, schools and all other infrastructure; they are the cornerstone of our communities.

Students learned about the construction aggregates industry (i.e., sand, gravel and crushed stone) and how they are used to build roads, homes and schools in their community.

The in-class program begins with a lecture about the local construction aggregates industry and sand shortage. Next, students complete a lab experiment where they analyze construction aggregate samples (one with river sand and another with beach sand) using a sieve. After looking at the collected data, students determine which sand type is best for making concrete. Students graph their data in a pie chart and solve a word problem. Last, students make small batches of concrete and use silicone molds of owls, bees, trucks, cars, footballs and more to form their concrete. Students are able to see the chemical reaction that transforms the concrete from a liquid into a solid. Each student is able to take their concrete projects home as a souvenir.

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Welcome to Project Cornerstone News!

We are Project Cornerstone, a nonprofit dedicated to educating the public about the importance of local construction aggregates (i.e., sand, gravel and crushed stone) through hands-on learning in Science, Technology, Engineering and Mathematics (STEM).

If your child has or will participate in a Project Cornerstone activity and their school/program does not already have a media release form in place, please download, complete and return a Project Cornerstone Media Release Form.

Project Cornerstone, Inc.

Project Cornerstone's mission is to educate the public about the importance of local construction aggregates (i.e., sand, gravel and crushed stone) through hands-on learning in Science, Technology, Engineering and Mathematics (STEM). Construction aggregates are used to build roads, houses, schools and all other infrastructure; they are the cornerstone of our communities.